Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual page 1205

Copyright © 2010, Juniper Networks, Inc.
Ensure that you have the following tools and parts available:
A USB flash drive that meets the EX Series switch USB port specifications. See USB
Port Specifications for an XRE200 External Routing Engine.
A computer or other device that you can use to download the software package from
the Internet and copy it to the USB flash drive.
Download the Junos OS package that you would like to place onto the external Routing
1.
Engine from the Internet onto the USB flash drive using your computer or other device.
See "Downloading Software Packages from Juniper Networks" on page 83.
NOTE: In most cases, you should download the Junos OS image running
on the other devices in your EX8200 Virtual Chassis onto USB Flash
memory. Booting the external Routing Engine with the same software
currently running within the EX8200 Virtual Chassis ensures the external
Routing Engine will be recognized by the other Virtual Chassis member
devices after the recovery upgrade.
Remove the USB flash drive from the computer or other device.
2.
Insert the USB flash drive into the USB port on the external Routing Engine.
3.
Power off the external Routing Engine. See Powering Off an XRE200 External Routing
4.
Engine.
Reconnect power to the external Routing Engine. You will see the following prompt:
5.
Hit [Enter] to boot Immediately or [R] key to start recovery ...
Press the key to select the recovery software upgrade procedure.
R
The following prompt appears on your external Routing Engine:
6.
Select one of the following options ...
1. Reboot the system with out making any changes.
2. Start Recovery.
Choice :
Press the key.
2
Monitor the output:
7.
Starting Recovery Process ...
(user@switch, Wed Aug 18 16:30:02 IST 2010)
Loading /boot/defaults/loader.conf
/kernel text=0x4a6878 data=0x354e0+0x5edf4 syms=[0x4+0x601a0 +0x4+0x8a749
/
Hit [Enter] to boot immediately, or space bar for command prompt.
OK boot
GDB: debug ports: uart
GDB: current port: uart
KDB: debugger backends: ddb gdb
KDB: current backend: ddb
262144K of memory above 4GB ignored
Copyright (c) 1996-2010, Juniper Networks, Inc.
All rights reserved.
Chapter 46: Configuring EX8200 Virtual Chassis
1101